What is CVE-2026-41284?

CVE-2026-41284 is a high-severity vulnerability in Apache Tomcat, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.5/10. Published 2026-05-12.

How severe is CVE-2026-41284?

High severity. CVSS v3 base score is 7.5 out of 10.

Resource exhaustion in Apache Tomcat

CVE-2026-41284

Allocation of Resources Without Limits or Throttling vulnerability in Apache Tomcat. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.21, from 10.1.0-M1 through 10.1.54, from 9.0.0.M1 through 9.0.117. Older, unsupported versions may also be affected. Users are recommended to upgrade to version [FIXED_VERSION], which fixes the issue.

Published 2026-05-12 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.009 (57.0th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 57th percentile — 57.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.008 · newest: 0.009 · change: +0.000

Affected products

Apache Tomcat
Apache Software Foundation Tomcat — versions 11.0.0-M1, 10.1.0-M1, 9.0.0.M1

Weakness classification (CWE)

CWE-770 — Allocation of Resources Without Limits or Throttling

References

lists.apache.org/thread/2nvqjr7ovjmvx2vbhb7s61ycd5msc8qc (vendor-advisory, Mailing List, Vendor Advisory)
af854a3a-2127-422b-91ae-364da2661108 (Mailing List, Third Party Advisory)

Frequently asked questions

What is CVE-2026-41284?: CVE-2026-41284 is a high-severity vulnerability in Apache Tomcat, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.5/10. Published 2026-05-12.
How severe is CVE-2026-41284?: High severity. CVSS v3 base score is 7.5 out of 10.